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如何使特定的imageView回复简单的手势监听器，如何将onTouchListener链接到simpleGestureListener？

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我不知道如何将onTouchListener连接到SimpleOnGestureListener，因为onTouchlistener只接受它自己的类型 - touchlistener .

我这样做的方式是：onTouchEvent（不是特定的imageView的onTouch）将事件提供给gestureDetector对象进行处理 .

这导致 activity 能够检测到fling，doubletap和其他简单的手势 .

But i only want specific imageView to respond and recognize doubleTap

public class MainActivity extends Activity {
private class Erjan_gestures extends SimpleOnGestureListener{

    @Override
    public boolean onDoubleTap(MotionEvent e) {
        Log.wtf("x", "double tap occured!");
        return true ;
    }
}

Button button;
ImageView image ;

GestureDetector gestureDetector;
int oldW , oldH ;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    image = (ImageView) findViewById(R.id.card);
    button = (Button) findViewById(R.id.button);

    oldW = 500;
    oldH = 600;

    gestureDetector = new GestureDetector(new Erjan_gestures());
    gestureDetector.setIsLongpressEnabled(true);


    image.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            Log.wtf("x", "card's onTouch");
            //HOW TO CONNECT this ontouch to simple gesturelistener(class above)?
            return true;
        }
    });
}

@Override
public boolean onTouchEvent(MotionEvent event){
    Log.wtf("x", "-------------------------------onTouchEvent(MotionEvent event)");
    return gestureDetector.onTouchEvent(event) ;
}

}

如何连接图像onTouch以识别简单的手势？

ontouchevent gesture-recognition ontouch gesturelistener

1 回答

  • 0

    我发现没有比检查motionEvent的坐标更好的解决方案：

    private class Erjan_gestures extends SimpleOnGestureListener{
@Override
        public boolean onDoubleTap(MotionEvent e) {
            float e_x = e.getRawX();
            float e_y = e.getRawY();
            if(e_x > 1360 && e_x < 1733 && e_y > 465 && e_y < 1028){
                doubleTapHappened = true ;//DESIRED ACTION
                Log.wtf("x", "double tap occured on CARD!");
            }

            return true ;
        }

    我还不能编写自己的自定义视图，以期望的方式响应手势 . 所以我只检查 where the tap occurred .

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